diff --git a/backend/migrations-init/m220102_214745_populate_url_routes.php b/backend/migrations-init/m220102_214745_populate_url_routes.php
index c84887d10..032c0eb24 100644
--- a/backend/migrations-init/m220102_214745_populate_url_routes.php
+++ b/backend/migrations-init/m220102_214745_populate_url_routes.php
@@ -18,30 +18,30 @@ class m220102_214745_populate_url_routes extends Migration
     'changelog' => 'site/changelog',
     'site/captcha' => 'site/captcha',
     'dashboard' => 'dashboard/index',
-    'dashboard/news/<id:\d+>' => 'dashboard/news',
+    'dashboard/news/<id:[1-9]\d*>' => 'dashboard/news',
     'challenges' => 'challenge/default/index',
-    'challenge/<id:\d+>' => 'challenge/default/view',
-    'challenge/<id:\d+>/download' => 'challenge/default/download',
-    'challenge/<id:\d+>/rate' => 'game/default/rate-solver',
+    'challenge/<id:[1-9]\d*>' => 'challenge/default/view',
+    'challenge/<id:[1-9]\d*>/download' => 'challenge/default/download',
+    'challenge/<id:[1-9]\d*>/rate' => 'game/default/rate-solver',
     'targets' => 'target/default/index',
     'targets/search' => 'target/default/search',
-    'target/<id:\d+>' => 'target/default/view',
-    'target/<id:\d+>/rate' => 'game/default/rate-headshot',
-    'target/<id:\d+>/badge' => 'target/default/badge',
-    'target/<id:\d+>/spin' => 'target/default/spin',
-    'target/<id:\d+>/spawn' => 'target/default/spawn',
-    'target/<id:\d+>/shut' => 'target/default/shut',
-    'target/<id:\d+>/ip' => 'target/default/ip',
-    'target/<target_id:\d+>/writeup/read/<id:\d+>' => 'target/writeup/read',
-    'target/<target_id:\d+>/writeup/rate/<id:\d+>' => 'game/default/rate-writeup',
-    'target/<id:\d+>/writeups/enable' => 'target/writeup/enable',
-    'target/<id:\d+>/writeup/submit' => 'target/writeup/submit',
-    'target/<id:\d+>/writeup/view' => 'target/writeup/view',
-    'target/<id:\d+>/writeup/update' => 'target/writeup/update',
+    'target/<id:[1-9]\d*>' => 'target/default/view',
+    'target/<id:[1-9]\d*>/rate' => 'game/default/rate-headshot',
+    'target/<id:[1-9]\d*>/badge' => 'target/default/badge',
+    'target/<id:[1-9]\d*>/spin' => 'target/default/spin',
+    'target/<id:[1-9]\d*>/spawn' => 'target/default/spawn',
+    'target/<id:[1-9]\d*>/shut' => 'target/default/shut',
+    'target/<id:[1-9]\d*>/ip' => 'target/default/ip',
+    'target/<target_id:[1-9]\d*>/writeup/read/<id:[1-9]\d*>' => 'target/writeup/read',
+    'target/<target_id:[1-9]\d*>/writeup/rate/<id:[1-9]\d*>' => 'game/default/rate-writeup',
+    'target/<id:[1-9]\d*>/writeups/enable' => 'target/writeup/enable',
+    'target/<id:[1-9]\d*>/writeup/submit' => 'target/writeup/submit',
+    'target/<id:[1-9]\d*>/writeup/view' => 'target/writeup/view',
+    'target/<id:[1-9]\d*>/writeup/update' => 'target/writeup/update',
     'claim' => 'target/default/claim',
-    'profile/<id:\d+>' => 'profile/index',
-    'profile/<id:\d+>/badge' => 'profile/badge',
-    'profile/<id:\d+>/invite' => 'profile/invite',
+    'profile/<id:[1-9]\d*>' => 'profile/index',
+    'profile/<id:[1-9]\d*>/badge' => 'profile/badge',
+    'profile/<id:[1-9]\d*>/invite' => 'profile/invite',
     'profile/me' => 'profile/me',
     'profile/ovpn/<id>' => 'profile/ovpn',
     'profile/settings' => 'profile/settings',
@@ -59,12 +59,12 @@ class m220102_214745_populate_url_routes extends Migration
     'legal/terms-and-conditions' => 'legal/terms-and-conditions',
     'privacy_policy' => 'legal/privacy-policy',
     'legal/privacy-policy' => 'legal/privacy-policy',
-    'target/<id:\d+>/vs/<profile_id:\d+>' => 'target/default/versus',
-    'target/<id:\d+>/versus/<profile_id:\d+>' => 'target/default/versus',
+    'target/<id:[1-9]\d*>/vs/<profile_id:[1-9]\d*>' => 'target/default/versus',
+    'target/<id:[1-9]\d*>/versus/<profile_id:[1-9]\d*>' => 'target/default/versus',
     'tutorials' => 'tutorial/default/index',
-    'tutorial/<id:\d+>' => 'tutorial/default/view',
+    'tutorial/<id:[1-9]\d*>' => 'tutorial/default/view',
     'leaderboards' => 'game/leaderboards/index',
-    'badge/<profile_id:\d+>/headshot/<target_id:\d+>' => 'game/badge/headshot',
+    'badge/<profile_id:[1-9]\d*>/headshot/<target_id:[1-9]\d*>' => 'game/badge/headshot',
     'teams' => 'team/default/index',
     'team/create' => 'team/default/create',
     'team/update' => 'team/default/update',
@@ -73,12 +73,12 @@ class m220102_214745_populate_url_routes extends Migration
     'team/join/<token>' => 'team/default/join',
     'team/invite/<token>' => 'team/default/invite',
     'team/renew/<token>' => 'team/default/renew',
-    'team/approve/<id:\d+>' => 'team/default/approve',
-    'team/reject/<id:\d+>' => 'team/default/reject',
+    'team/approve/<id:[1-9]\d*>' => 'team/default/approve',
+    'team/reject/<id:[1-9]\d*>' => 'team/default/reject',
     'networks' => 'network/default/index',
-    'network/<id:\d+>' => 'network/default/view',
-    'network/private/<id:\d+>' => 'network/private/view',
-    'network/private/spin/<network_id:\d+>/<target_id:\d+>' => 'network/private/spin',
+    'network/<id:[1-9]\d*>' => 'network/default/view',
+    'network/private/<id:[1-9]\d*>' => 'network/private/view',
+    'network/private/spin/<network_id:[1-9]\d*>/<target_id:[1-9]\d*>' => 'network/private/spin',
     'api/headshots' => 'api/headshot/index',
     'api/notification' => 'api/notification/index',
     'subscriptions' => 'subscription/default/index',
@@ -98,14 +98,14 @@ class m220102_214745_populate_url_routes extends Migration
     'profile/generate-token' => 'profile/generate-token',
     'api/target/claim' => 'api/target/claim',
     'api/target/instances' => 'api/target/instances',
-    'api/target/<id:\d+>' => 'api/target/view',
-    'api/target/<id:\d+>/spin' => 'api/target/spin',
-    'api/target/<id:\d+>/spawn' => 'api/target/spawn',
-    'api/target/<id:\d+>/shut' => 'api/target/shut',
+    'api/target/<id:[1-9]\d*>' => 'api/target/view',
+    'api/target/<id:[1-9]\d*>/spin' => 'api/target/spin',
+    'api/target/<id:[1-9]\d*>/spawn' => 'api/target/spawn',
+    'api/target/<id:[1-9]\d*>/shut' => 'api/target/shut',
     'api/profile/me' => 'api/profile/me',
     'speed' => 'speedprogramming/default/index',
-    'speed/<id:\d+>' => 'speedprogramming/default/view',
-    'speed/<id:\d+>/answer' => 'speedprogramming/default/answer',
+    'speed/<id:[1-9]\d*>' => 'speedprogramming/default/view',
+    'speed/<id:[1-9]\d*>/answer' => 'speedprogramming/default/answer',
     'suspended' => 'site/suspended',
   ];
   /**
diff --git a/backend/migrations/m260304_095934_replace_integer_url_route_matches.php b/backend/migrations/m260304_095934_replace_integer_url_route_matches.php
new file mode 100644
index 000000000..71f0a7a07
--- /dev/null
+++ b/backend/migrations/m260304_095934_replace_integer_url_route_matches.php
@@ -0,0 +1,25 @@
+<?php
+
+use yii\db\Migration;
+
+class m260304_095934_replace_integer_url_route_matches extends Migration
+{
+  /**
+   * {@inheritdoc}
+   */
+  public function safeUp()
+  {
+    $from=':\d+';
+    $to=':[1-9]\d*';
+    $where='%:\\\\d+%';
+    $this->execute("update url_route SET source = REPLACE(source, :from, :to) WHERE source LIKE :where",[':from'=>$from,':to'=>$to,':where'=>$where]);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function safeDown()
+  {
+    echo "m260304_095934_replace_integer_url_route_matches cannot be reverted.\n";
+  }
+}